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Schmallenberg virus detected in Danish farm animals for the first time

The National Veterinary Institute has found Schmallenberg virus in a stillborn calf with malformations in Funen. This is the first time that the virus is found in Danish livestock. Earlier, Denmark has demonstrated antibodies to the virus in cattle, and the virus is detected in midges.

A malformed and stillborn calf from Fyn is the first Danish animal tested positive for Schmallenberg virus. The National Veterinary Institute, examined the calf on the new virus that was spreading in Europe in summer and autumn 2011.

"There may be viewed abortion and especially the birth of deformed kids, lambs and calves from dams that have been infected with Schmallenberg virus during gestation. The mother of the positive calf, tested tested positive for antibodies to Schmallenberg and has probably been infected during gestation in the fall through the small gnats - midges and the virus is transferred to the calf, "says Bertel Strandbygaard, veterinarian at the National Veterinary Institute.

The National Veterinary Institute in agreement with the Food & Drug Administration investigated stillbirths and weak born calves, lambs and kids with deformities of Schmallenberg virus in March, April and May. There were 56 animals studied, and a single calf is thus tested positive for the virus, using the PCR method.

Antibodies against Schmallenberg virus was detected in four cows in South Jutland

Four cows from Southern Jutland, which has given birth to deformed calves found positive for antibodies to Schmallenberg virus by National Veterinary Institute. Thus, the number of antibody positive animals in southern Jutland up to six cattle.

National Veterinary Institute has found antibodies against Schmallenberg virus in another four cows from South Jutland.

"Blood samples from the cows have been taken in connection with the spring-born malformed calves. Also calves from three of the four cows have been investigated but have not identified any virus in any of them," says Anette Bøtner, the Head and veterinarian at the National Veterinary Institute.

In May, two other cattle from NSW as the first in Denmark tested positive for antibodies when they were tested in relation to exports.

Subsequently, a malformed and stillborn calf from Fyn found positive for the virus Schmallenberg and the dam was found positive for antibodies.

A total of 61 stillborn and weak born calves, lambs and kids with birth defects have been studied for itself Schmallenberg virus, of which only the calf from Fyn is found positive.

National Veterinary Institute has so far examined samples from a total of 95 animals for antibodies, seven were found positive.

SCHMALLENBERG Virus (SBV) has survived the winter and is already circulating among livestock again in Britain, Defra has announced.

The virus has been identified on around five farms in new-born lambs born in May and June. This means the ewes that carried them must have been infected in the early part of this year, January or February, after the peak winter period when the midges that carry them are no longer circulating, according to Defra Deputy Chief veterinary Officer Alick Simmons.

He told Farmers Guardian the discovery that the virus had survived the winter was no surprise, given what was already known about it and related viruses.

Mr Simmons announce and that Defra is set to embark on a nationwide surveillance programme to establish how far the virus has spread and urged farmers to be vigilant in looking for signs in infected cattle that could show flu-like symptoms and in any lambs born out of season at this time of year.

He said it was impossible to gauge the effect the virus would have on the livestock industry this year, partly because the virus’ worst effects are seen in newborn lambs and calves, rather than the adult animals that are infected by midges.

He said the virus was likely to spread northwards and westwards from southern and eastern England where the bulk of infection was identified last year. However, initially at least, the implications for infected livestock will not be too severe as very few sheep are currently in lamb and a tiny proportion of cattle infected go on to have problems with their calves.

What is more, as the virus spreads animals that are infected are likely to gain immunity from future infection based, again, on what is known about SBV and related diseases, Mr Simmons. He added that the history of the disease in mainland Europe, particularly France, showed that SBV can spread rapidly, far more quickly than bluetongue, for example.

“In some ways it is better for farmers if the disease spreads quickly in Britain as more of the country will have been covered, with the benefit of immunity, before the autumn breeding season,” he said.

The problems are most likely to come when infection reaches counties to the north and west of the current centre of infection in the autumn when many ewes and cows are in the early stages of pregnancy, the critical period when infection results in stillborn and deformed offspring.

“We cannot say at this stage which areas will be particularly at risk,” he said.

Schmallenberg virus is present in the UK this summer and could spread throughout the country, scientists say.

Staff from the Royal Veterinary College (RVC) and Institute for Animal Health (IAH) found the virus in animals on the RVC's farm in Hertfordshire in June.

The scientists say this proves the midge-borne virus survived the winter, and will spread as midge numbers rise.

Schmallenberg causes severe deformities in lambs and calves born to infected mothers, but adults recover quickly.

It poses no threat to human health.

Since its first detection in the UK in January, cases have been documented on 276 farms, mostly in the south and east of England, Chief Veterinary Officer Nigel Gibbens told reporters at a briefing in London.

However, many infections are missed because the symptoms in cows are mild, while infected sheep often show no signs at all.

"Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear." -Nelson Mandela

Schmallenberg virus re-emerges and could spread throughout British livestock over the next few weeks

‎7 August ‎2012

Schmallenberg virus, a new livestock disease discovered last year which causes birth deformities in sheep and cattle, has re-emerged this summer and could spread all across Britain in the weeks to come, scientists warned today.

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